Adjustable window-screen



T. W. BOWLING.

Adjustable window Screen.

INVENTOR ATTORNEY N.PETERS. PHOTO-LITHOGRAFNER. WASHINGTON. n c,

WITNESSES UNITED STATES PATENT OFFICE.

THOMAS W. DOWLING, OF DETROIT, MICHIGAN.

ADJUSTABLE WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 229,032, dated June 22, 1880. Application filed February 14, 1880.

To all whom it may concern Beit known that I, THOMAS W. DOWLING, of Detroit, county of Wayne, State of Michigan, have invented a new and useful Improvement in Adjustable Window-Screens; and I declare the following to be a full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use it, reference being bad to the of an adjustable window-screen embodying my invention, showing the groove in one of the sections and the tenons in the other. Fig. 2 is a view upon the exterior of the screen Fig. 3, a view from the inside.

Heretofore adjustable window-screens have been made either by attaching a metallic strip to one section, which should extend over and embrace the frame of the adjacent section, or a groove was sometimes formed in each section,

and those grooves provided with metallic strips made to engage with each other. They have ,alsolieenglrmed with a dovetailed groove in each sectio rand with a dovetail tenon projecting from each section into the groove in the other section; butthese have all been objectionable, owing to the expense in the former case and the uncomely appearance in the lat ter case, as it could not be placed in a window without presenting toward the street an unsightly groove.

A is one and B the other section of a window-screen, made adjustable by one being arranged to slide upon the other. 0 is a groove formed in one of the sections, and D are tenons projecting into the groove from the other section. The groove 0 is made undercut or dovetailed in order to retain the tenons D.

The tenons D may be simply flat-headed screws, as indicated, or may be in the nature of a nail or a stud made especially for this purpose, one or more tenons being made to project into each of the grooves, two being shown in the drawings.

By this construction it is apparent that, there being grooves only in one of the sections, A, of the screen, that side of the apparatus may be presented toward the interior of the building, and the other side, which shows no groove, toward the street. The objectionable feature of showing the groove is thus avoided on one side of the screen. The device made in this manner, with simply the undercut grooves in one section and ordinary flat-headed screws projecting from the other section, makes a very cheap yet workmanlike structure, and

at the same time is more desirable than such structures as present a groove to the exterior whenever the same is in use.

What I claim is An adjustable window-screen consisting of two sections, the outer section only having a dovetailed groove on its inner face, and the other section having pins, screws, or studs projecting as dovetailed tenons into the groove, the construction being such that in use no groove is presented toward the exterior, substantially as and for the purposes described.

In testimony whereof I sign this specification in the presence of two witnesses.

THOMAS W. BOWLING. 

